Toothbrush

ABSTRACT

A toothbrush having a body and a treatment device is disclosed. In one aspect, the toothbrush comprises: a body comprising a handle portion, a head portion and a longitudinal axis; a plurality of tooth cleaning elements extending from the head portion; a treatment device coupled to the body so as to be alterable between a storage state and a use state, the treatment device comprising: a housing; a power source disposed within the housing; and an electromagnetic radiation source disposed within the housing and operably coupled to the power source.

BACKGROUND

Oral care implements such as toothbrushes are typically used by applyingtoothpaste or dentifrice to a bristle section on the head of thetoothbrush, followed by brushing regions of the oral cavity (e.g., theteeth or soft tissue such as the tongue and/or gums) with the bristlesection. Furthermore, a growing cosmetic trend has been to whiten theteeth because white teeth are generally associated with a healthy andclean oral cavity. However, conventional teeth whitening requires a userto make multiple visits to a dentist or to apply a whitening solution toa tray and to then leave the tray in the user's mouth for a period oftime. While tray-based systems are suitable, many people do not use themdue to the fact that they tend to be uncomfortable and/or awkward.Moreover, in order to use a whitening tray, a user must keep the trayand the required components at hand. This not only requires extrastorage space in already cramped bathroom cabinets, but also requiresthat the user remember to use the whitening system. Furthermore, thesetray-based systems are not conveniently portable for transport and/ortravel. These problems require a better way to deliver the whiteningagent (and other oral care agents) to the teeth and a more convenienttooth whitening (and other oral care agent application) system fortransport and/or travel.

BRIEF SUMMARY

Exemplary embodiments according to the present disclosure are directedto a toothbrush having a body and a treatment device coupled to thebody. The treatment device comprises a housing, a power source and anelectromagnetic radiation source. The treatment device may be alterablebetween a storage state and a use state. In other embodiments, the powersource and the electromagnetic radiation source may be formed into thebody and protected by a cover when not in use.

In one embodiment, the invention can be a toothbrush comprising: a bodycomprising a handle portion, a head portion and a longitudinal axis; aplurality of tooth cleaning elements extending from the head portion; atreatment device coupled to the body so as to be alterable between astorage state and a use state, the treatment device comprising: ahousing; a power source disposed within the housing; and anelectromagnetic radiation (EMR) source disposed within the housing andoperably coupled to the power source.

Further areas of applicability of the present invention will becomeapparent from the detailed description provided hereinafter. It shouldbe understood that the detailed description and specific examples, whileindicating the preferred embodiment of the invention, are intended forpurposes of illustration only and are not intended to limit the scope ofthe invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from thedetailed description and the accompanying drawings, wherein:

FIG. 1 is a perspective view of a toothbrush having a body and atreatment device coupled thereto in accordance with a first embodimentof the present invention;

FIG. 2 is a perspective view of the toothbrush of FIG. 1 with thetreatment device separated from the body;

FIG. 3 is a perspective view of the treatment device of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line IV-IV ofFIG. 3;

FIG. 5 is a schematic cross-sectional view taken along line V-V of FIG.1;

FIG. 6 is a perspective view of a toothbrush having a body and atreatment device coupled thereto in accordance with a second embodimentof the present invention;

FIG. 7 is a schematic cross-sectional view taken along line VII-VII ofFIG. 6 with the cap covering the applicator;

FIG. 8 is a perspective view of a toothbrush having a body and atreatment device separated therefrom in accordance with a thirdembodiment of the present invention;

FIG. 9 is a perspective view of the treatment device of FIG. 8;

FIG. 10 is a schematic cross-sectional view taken along line X-X of FIG.9;

FIG. 11 is a schematic cross-sectional view taken along line XI-XI ofFIG. 8 with the treatment device coupled to the body;

FIG. 12 is a perspective view of a toothbrush having a body and a covercoupled thereto in accordance with a fourth embodiment of the presentinvention;

FIG. 13 is a perspective view of the toothbrush of FIG. 12 with thecover separated from the body;

FIG. 14 is a schematic cross-sectional view taken along line XIV-XIV ofFIG. 12 in accordance with one embodiment of the present invention;

FIG. 15 is a schematic cross-sectional view taken along line XIV-XIV ofFIG. 12 in accordance with another embodiment of the present invention;and

FIG. 16 is a schematic cross-sectional view taken along line XIV-XIV ofFIG. 12 in accordance with yet another embodiment of the presentinvention.

DETAILED DESCRIPTION

The following description of the preferred embodiment(s) is merelyexemplary in nature and is in no way intended to limit the invention,its application, or uses.

The description of illustrative embodiments according to principles ofthe present invention is intended to be read in connection with theaccompanying drawings, which are to be considered part of the entirewritten description. In the description of embodiments of the inventiondisclosed herein, any reference to direction or orientation is merelyintended for convenience of description and is not intended in any wayto limit the scope of the present invention. Relative terms such as“lower,” “upper,” “horizontal,” “vertical,” “above,” “below,” “up,”“down,” “top” and “bottom” as well as derivatives thereof (e.g.,“horizontally,” “downwardly,” “upwardly,” etc.) should be construed torefer to the orientation as then described or as shown in the drawingunder discussion. These relative terms are for convenience ofdescription only and do not require that the apparatus be constructed oroperated in a particular orientation unless explicitly indicated assuch. Terms such as “attached,” “affixed,” “connected,” “coupled,”“interconnected,” and similar refer to a relationship wherein structuresare secured or attached to one another either directly or indirectlythrough intervening structures, as well as both movable or rigidattachments or relationships, unless expressly described otherwise.Moreover, the features and benefits of the invention are illustrated byreference to the exemplified embodiments. Accordingly, the inventionexpressly should not be limited to such exemplary embodimentsillustrating some possible non-limiting combination of features that mayexist alone or in other combinations of features; the scope of theinvention being defined by the claims appended hereto.

Referring first to FIGS. 1 and 2 concurrently, an oral care implement100 is illustrated in accordance with an embodiment of the presentinvention. The oral care implement 100 generally comprises a body 105comprising a handle portion 120 and a head portion 110, tooth cleaningelements 115 extending from the head portion 110, and a treatment device160 coupled to the body 105. The oral care implement 100 is intended tobe used such that the tooth cleaning elements 115 clean a user's teeth.Furthermore, the treatment device 160 is intended to be used to emitelectromagnetic radiation (EMR) to a user's teeth or other oralsurfaces. Specifically, before or after brushing his or her teeth withthe oral care implement, the user can apply an oral care material, suchas for example without limitation a tooth whitening solution, to theuser's teeth. Then, after the oral care material is applied to theuser's teeth, the user can emit EMR to the user's teeth using thetreatment device. Emitting EMR to the user's teeth after applying, forexample, a tooth whitening solution to the user's teeth may enhance theeffects of the tooth whitening solution by speeding up the toothwhitening process or by increasing the degree to which the toothwhitening solution is able to whiten the user's teeth. EMR may alsoincrease the effects and benefits of oral care materials other thantooth whitening solutions. In the inventive oral care implement 100described herein, the treatment device 160 is coupled to the body 105 ofthe oral care implement 100 so that the brushing and whitening processescan be achieved with a single, portable oral care implement 100. In someembodiments as discussed in more detail below the oral care material maybe contained within the oral care implement 100, such as by beingcontained within the body 105 of the oral care implement 100 or withinthe treatment device 160 of the oral care implement 100.

In the exemplified embodiment, the oral care implement 100 is in theform of a manual toothbrush. However, in certain other embodiments theoral care implement 100 can take on other forms such as being a poweredtoothbrush, a tongue scraper, a gum and soft tissue cleanser, a waterpick, an interdental device, a tooth polisher, a specially designedansate implement having tooth engaging elements or any other type ofimplement that is commonly used for oral care. Thus, it is to beunderstood that the inventive concepts discussed herein can be appliedto any type of oral care implement unless a specific type of oral careimplement is specified in the claims.

The body 105 of the oral care implement 100 generally extends from aproximal end 101 to a distal end 102 along a longitudinal axis A-A.Conceptually, the longitudinal axis A-A is a reference line that isgenerally coextensive with the three-dimensional center line of the body105. Because the body 105 may, in certain embodiments, be a non-linearstructure, the longitudinal axis A-A of the body 105 may also benon-linear in certain embodiments. However, the invention is not to beso limited in all embodiments and in certain other embodiments the body105 may have a simple linear arrangement and thus a substantially linearlongitudinal axis A-A.

As noted above, the body 105 of the oral care implement 100 generallycomprises the head portion 110 and the handle portion 120. The handleportion 120 is an elongated structure extending from a proximal end 121(which is also the proximal end 101 of the body 105) to a distal end122. The handle portion 120 provides the mechanism by which the user canhold and manipulate the oral care implement 100 during use. The handleportion 120 comprises an outer surface 125 that includes a front surface123 and an opposing rear surface 124. In the exemplified embodiment, thehandle portion 120 is generically depicted having various contours foruser comfort. Of course, the invention is not to be so limited in allembodiments and in certain other embodiments the handle portion 120 cantake on a wide variety of shapes, contours and configurations, none ofwhich are limiting of the present invention unless so specified in theclaims. In one particular embodiment, the handle portion 120 has agenerally cylindrical shape.

In the exemplified embodiment, the handle portion 120 is formed of arigid plastic material, such as for example without limitation polymersand copolymers of ethylene, propylene, butadiene, vinyl compounds andpolyesters such as polyethylene terephthalate. In other embodiments thehandle portion 120 can be formed of any material that is notincompatible with an oral care material that is stored therein. Ofcourse, the invention is not to be so limited in all embodiments and thehandle portion 120 may include a resilient material, such as athermoplastic elastomer, as a grip cover that is molded over portions ofor the entirety of the handle portion 120 to enhance the gripability ofthe handle portion 120 during use. For example, portions of the handleportion 120 that are typically gripped by a user's palm during use maybe overmolded with a thermoplastic elastomer or other resilient materialto further increase comfort to a user.

The head portion 110 of the oral care implement 100 is coupled to thehandle portion 120 and comprises a front surface 111 and an opposingrear surface 112. Specifically, the head portion 110 of the oral careimplement 100 is coupled to the distal end 122 of the handle portion120. In the exemplified embodiment, the head portion 110 is formedintegrally with the handle portion 120 as a single unitary structureusing a molding, milling, machining or other suitable process. Thus, insuch embodiments the body 105 including both the handle portion 120 andthe head portion 110 is formed from a single shot in an injectionmolding process or in any other manner known in the art. However, inother embodiments the handle portion 120 and the head portion 110 may beformed as separate components which are operably connected at a laterstage of the manufacturing process by any suitable technique known inthe art, including without limitation thermal or ultrasonic welding, atight-fit assembly, a coupling sleeve, threaded engagement, adhesion, orfasteners. Typically, the head portion 110 is formed of any of thematerials described above for use in forming the handle portion 120.

In the exemplified embodiment, the head portion 110 of the oral careimplement 100 is provided with a plurality of tooth cleaning elements115 extending from the front surface 111. In the exemplified embodimentthe tooth cleaning elements 115 are generically illustrated. In certainembodiments the exact structure, pattern, orientation and material ofthe tooth cleaning elements 115 are not to be limiting of the presentinvention. Thus, as used herein, the term “tooth cleaning elements” isused in a generic sense to refer to any structure that can be used toclean, polish or wipe the teeth and/or soft oral tissue (e.g. tongue,cheek, gums, etc.) through relative surface contact. Common examples of“tooth cleaning elements” include, without limitation, bristle tufts,filament bristles, fiber bristles, nylon bristles, spiral bristles,rubber bristles, elastomeric protrusions, flexible polymer protrusions,combinations thereof and/or structures containing such materials orcombinations. Suitable elastomeric materials include any biocompatibleresilient material suitable for uses in an oral hygiene apparatus. Toprovide optimum comfort as well as cleaning benefits, the elastomericmaterial of the tooth or soft tissue engaging elements has a hardnessproperty in the range of A8 to A25 Shore hardness. One suitableelastomeric material is styrene-ethylene/butylene-styrene blockcopolymer (SEBS) manufactured by GLS Corporation. Nevertheless, SEBSmaterial from other manufacturers or other materials within and outsidethe noted hardness range could be used.

The tooth cleaning elements 115 of the present invention can beconnected to the head portion 110 in any manner known in the art. Forexample, staples/anchors, in-mold tufting (IMT) or anchor free tufting(AFT) could be used to mount the cleaning elements/tooth engagingelements to the head portion 110. In certain embodiments, the inventioncan be practiced with various combinations of stapled, IMT or AFTbristles. In AFT, a plate or membrane having tuft holes therein isformed separately from the body 105 of the oral care implement 100.Bristles or other tooth cleaning elements are positioned within the tuftholes. The free ends of the bristles on one side of the plate ormembrane perform the cleaning function. The ends of the bristles on theother side of the plate or membrane are melted together by heat to beanchored in place. After the bristles are properly coupled to the headplate, the head plate is secured to the brush head such as by ultrasonicwelding. Any suitable form of cleaning elements may be used in the broadpractice of this invention. Alternatively, the bristles could be mountedto tuft blocks or sections by extending through suitable openings in thetuft blocks so that the base of the bristles is mounted within or belowthe tuft block.

Although not illustrated herein, in certain embodiments the head portion110 may also include a soft tissue cleanser coupled to or positioned onits rear surface 112. An example of a suitable soft tissue cleanser thatmay be used with the present invention and positioned on the rearsurface 112 of the head portion 110 is disclosed in U.S. Pat. No.7,143,462, issued Dec. 5, 2006 to the assignee of the presentapplication, the entirety of which is hereby incorporated by reference.In certain other embodiments, the soft tissue cleanser may includeprotuberances, which can take the form of elongated ridges, nubs, orcombinations thereof. Of course, the invention is not to be so limitedand in certain embodiments the oral care implement 100 may not includeany soft tissue cleanser.

Still referring to FIGS. 1 and 2 concurrently, the oral care implement100 will be further described. As discussed above, in addition to thebody 105, the oral care implement 100 also comprises the treatmentdevice 160, which is coupled to the body 105. The treatment device 160functions to emit electromagnetic radiation (EMR) to a user's oralcavity as will be discussed in more detail below with reference to FIGS.3 and 4. More specifically, the treatment device 160 is coupled to thebody 105 so as to be alterable between a storage state (FIG. 1) and ause state (FIG. 2). In the exemplified embodiment, the treatment device160 is detachably coupled to the body 105 such that the treatment device160 can be completely separated from the body 105 when the treatmentdevice 160 is in the use state as depicted in FIG. 2. However, theinvention is not to be so limited in all embodiments and in certainother embodiments the treatment device 160 may be coupled to the body105 in both the storage and use states, such as by being attached by ahinge or the like so that the treatment device 160 is hingedly orpivotally coupled to the body 105, or such as being slidably coupled tothe body 105 so that the treatment device 160 can be translatedlongitudinally between the storage and use states.

The handle portion 120 of the body 105 comprises a longitudinaldepression 130 formed therein. In the exemplified embodiment, thelongitudinal depression 130 is located in a proximal section 103 of thehandle portion 120. More specifically, the longitudinal depression 130is located adjacent the proximal end 121 of the handle portion 120 andextends to a location adjacent a thumb grip portion 126 of the handleportion 120. However, the invention is not to be so limited in allembodiments and the longitudinal depression 130 may be positioned atother locations along the handle portion 120 of the body 105 and mayextend for longer or shorter lengths along the handle portion 120.Furthermore, although in the exemplified embodiment the longitudinaldepression 130 is illustrated as being formed into the front surface 123of the handle portion 120, the invention is not to be so limited in allembodiments and in certain other embodiments the longitudinal depression130 may be formed into the rear surface 124 of the handle portion 120 orany portions (such as side surfaces) of the outer surface 125 of thehandle portion 120 as desired. In other embodiments the longitudinaldepression 130 may be located on the rear surface 112 of the headportion 110. In the exemplified embodiment, the longitudinal depression130 forms a recess or cutout into the outer surface 125 of the handleportion 120 within which the treatment device 160 nests when thetreatment device 160 is in the storage state.

The longitudinal depression 130 comprises a floor 131 and upstandingsidewalls 132 that extend from the floor 131 to the outer surface 125 ofthe handle portion 120. Furthermore, a slot or aperture 133 is formedinto the floor 131 of the longitudinal depression 130. The aperture 133is longitudinally elongated along the floor 131 of the longitudinaldepression 130. Furthermore, in the exemplified embodiment the aperture133 does not extend through the entire thickness of the handle portion120, but rather the aperture 133 has a floor 136 (see FIG. 5). However,the invention is not to be so limited in all embodiments and in certainother embodiments the aperture 133 may extend through the entirethickness of the handle portion 120 (i.e., from the front surface 123 tothe rear surface 124) so as to form a passageway through the handleportion 120. The purpose of the aperture 133 will be better understoodfrom the description of FIG. 5, but it is intended to house a portion ofthe treatment device 160 when the treatment device 160 is in the storagestate. In certain embodiments, the aperture 133 may not be needed forhousing a portion of the treatment device 160 and therefore the aperture133 may be omitted in some embodiments.

In the exemplified embodiment, the longitudinal depression 130 furtherincludes at least one connector 134 on the upstanding sidewalls 132 forcoupling the treatment device 160 to the handle portion 120. Althoughonly one connector 134 is visible in FIG. 2, it can be seen from FIG. 5that in the exemplified embodiment there is a connector 134 on each ofthe opposing sidewalls 132. Of course, the number and exact location ofthe connectors 134 are not to be limiting in all embodiments.Furthermore, in the exemplified embodiment the connector 134 is anopening or notch. Of course, the invention is not to be so limited inall embodiments and in certain other embodiments the connector 134 canbe a bump or protrusion. In still other embodiments the connector 134can be a part of a hook-and-loop fastener system or any other type ofmechanical coupling system or device. Regardless of the exactconfiguration of the connectors 134, they are intended to enablecoupling between the treatment device 160 and the handle portion 120.

In that regard, the treatment device 160 comprises a housing 161 that iscouplable to the body 105 of the toothbrush 100 and that houses variousother components as will be discussed below with reference to FIGS. 3and 4. In the exemplified embodiment, the treatment device 160 comprisesa connector 162 on the housing 161. In the exemplified embodiment, theconnector 162 is a protrusion that is intended to mate with theconnector 134 (i.e., the opening or notch) on the sidewall 134 of thelongitudinal depression 130. Of course, in other embodiments theconnector 134 may be the protrusion as discussed above and the connector162 may be a notch or opening.

In certain embodiments, the entire housing 161, including the connector162, is formed of a rigid plastic material, such as any of the materialsdiscussed above with regard to the handle portion 120. However, due toits small size, the connector 162 is able to have someresiliency/movement to enable the treatment device 160 to be coupled toand decoupled from the handle portion 120 of the body 105. Specifically,when positioning the treatment device 160 into and out of the storagestate, the connector 162 may move and flex as needed to enable thetreatment device 160 to nest within and be separated from the handleportion 120 of the body 105.

Furthermore, in the exemplified embodiment the longitudinal depression130 of the handle portion 120 of the body 105 comprises a protuberance135 extending upwardly from the floor 131. The protuberance 135 isintended to mate with an opening and switch on the treatment device 160as will be described in more detail below with reference to FIGS. 3-5.

When the treatment device 160 is coupled to the handle portion 120 inthe storage state, the treatment device 160 nests within thelongitudinal depression 130. Furthermore, in the storage state thehousing 161 of the treatment device 160 forms a transverse section of ahandle 129 of the toothbrush 100 along the length of the longitudinaldepression 130. Thus, together the treatment device 160 and the handleportion 120 of the body 105 form a handle 129 for the toothbrush 100.Furthermore, in certain exemplary embodiments an outer surface 163 ofthe housing 161 of the treatment device 160 is substantially flush withthe outer surface 125 of the handle portion 120 of the body 105 when thetreatment device 160 is in the storage state. The housing 161 of thetreatment device 160 also comprises an inner surface 167 (FIG. 4) andthe inner surface 167 of the housing 161 is embedded in the handle 129of the toothbrush 100 when the treatment device 160 is in the storagestate. Thus, when the treatment device 160 is in the storage state, theinner surface 167 of the housing 161 is not visible or exposed.

Referring now to FIGS. 3 and 4 concurrently, the treatment device 160will be described in more detail. As discussed above, the treatmentdevice 160 comprises the housing 161. Furthermore, a power source 164and an electromagnetic radiation (EMR) source 165 are disposed withinthe housing 161. In certain embodiments, the EMR source 165 comprises afirst EMR source portion 165A and a second EMR source portion 165B. TheEMR source 165 is operably coupled to the power source 164 to providepower to the EMR source 165. The power source 164 can be any type ofpower source including without limitation batteries and the like.Furthermore, in the exemplified embodiment the treatment device 160 alsocomprises a switch 166. The switch 166 is operably coupled to the EMRsource 165 and to the power source 164 to turn the EMR source 165 on andoff. Specifically, when the switch 166 is open power is prevented fromtransmitting from the power source 164 to the EMR source 165 and the EMRsource 165 is in an off state and when the switch 166 is closed powertransmits from the power source 164 to the EMR source 165 and the EMRsource 165 is in an on state. In the exemplified embodiment, each of thepower source 164, the EMR source 165 and the switch 166 is operablycoupled together via a controller or processor 170. However, in otherembodiments the processor 170 may be omitted and other operablecouplings between the various electronic components are possible.

The EMR source 165 is intended to emit electromagnetic radiation. Theterm electromagnetic radiation includes any type of radiation on theelectromagnetic radiation spectrum. Specifically, in some embodimentselectromagnetic radiation includes radiowaves, microwaves, infrared,visible light, ultraviolet, X-rays and gamma rays. In certainembodiments the electromagnetic radiation is preferably ultravioletradiation, such as that having a wavelength of 150-410 nm, morespecifically 200-410 nm, still more specifically 250-410 nm, even morespecifically 300-410 nm, and still more specifically 350-410 nm. Ofcourse, the invention is not to be particularly limited by the type ofradiation emitted by the EMR source 165 in all embodiments and wavesthat are longer than 410 nm or shorter than 350 nm can be used in otherembodiments. Thus, in other embodiments the electromagnetic radiationmay be substantially free of ultraviolet radiation. In other embodimentsthe electromagnetic radiation may comprise wavelengths within a range ofabout 300 nm to about 750 nm. A person of ordinary skill in the art willbe able to determine the most preferred wavelength of the radiation tobe emitted from the EMR source 165 to achieve desired functions, such astooth whitening as discussed in more detail below. The EMR source 165may be light bulbs that emit the desired radiation, such as UV bulbs,LEDs or the like in certain embodiments. Whatever form of source is usedand whatever the size of the wavelengths, care should be taken tocontrol the intensity of the radiation in order to avoid possiblenegative health effects.

As discussed above, the housing 161 of the treatment device 160comprises an inner surface 167. Furthermore, the treatment device 160comprises a bite guard 168 that protrudes from the inner surface 167 ofthe housing 161. In the exemplified embodiment, the bite guard 168 has asemi-circular shape and is integrally formed with the housing 161 of thetreatment device 160. However, the invention is not to be so limited andthe shape of the bite guard 168 may be other than semi-circular, such asrectangular, triangular or any other polygonal shape. In still otherembodiments the bite guard 168 may simply be a thin cylindricalprotrusion that extends from the inner surface 167 of the housing 161that can be gripped between a user's teeth and/or lips during use aswill be discussed in more detail below. Thus, the size and/or shape ofthe bite guard 168 are not to be limiting of the present invention inall embodiments. In certain embodiments it is merely desirable that thebite guard 168 is configured to enable a user to maintain the treatmentdevice 160 in a location adjacent to the user's teeth during toothwhitening or other oral hygiene operations such as by gripping the biteguard 168 between the user's upper and lower teeth or between the user'supper and lower lips. Furthermore, in still other embodiments the biteguard 168 may be altogether omitted. In such embodiments the treatmentdevice 160 can be held up to a user's teeth by a user gripping the outersurface 163 of the housing 161, or by positioning the treatment device160 within the user's mouth in a similar manner as is done with amouthguard. Thus, the bite guard 168 is not required to be a part of thetreatment device 160 in all embodiments.

Furthermore, although described above as being integrally formed withthe housing 161, the invention is not to be so limited and in certainembodiments the bite guard 168 may be a separate component that iscoupled to the housing 161. For example, the housing 161 may be formedof a rigid or hard plastic material such as one of the materialsdiscussed above with regard to the handle 120 and the bite guard 168 maybe formed of a rubber material, such as a thermoplastic elastomer, anunsaturated rubber or a saturated rubber. In such embodiments, the biteguard 168 can be coupled to the housing 161 via mechanical interlockingfeatures in the molding of the housing 161 and the bite guard 168, or byadhesion, fasteners or the like. Forming the bite guard 168 out of athermoplastic elastomer (or other rubber material) is desirable in someembodiments because it is more comfortable for a user to grip athermoplastic elastomer between his or her teeth and/or lips than it isto grip a rigid plastic material between his or her teeth and/or lips.

As noted above, in certain embodiments the EMR source 165 comprises afirst EMR source portion 165A and a second EMR source portion 165B. Inthe exemplified embodiment, each of the first and second EMR sourceportions 165A, 165B and the bite guard 168 is longitudinally elongated.Furthermore, in the exemplified embodiment the bite guard 168 is locatedin between the first and second EMR source portions 165A, 165B. Thus,the EMR source 165, and more specifically the first and second EMRsource portions 165A, 165B, is configured to emit EMR 199 from thehousing 601, and more specifically from the inner surface 167 of thehousing 161, at a location adjacent to the bite guard 168. Therefore, ifthe treatment device 160 is being used to emit EMR to a user's teeth,the user will have the bite guard 168 positioned between his or herteeth. Due to the first and second EMR source portions 165A, 165B beinglocated on opposing sides of the bite guard 168, the first EMR sourceportion 165A will emit EMR to the user's upper teeth while the secondEMR source portion 165B emits EMR to the user's lower teeth when theinner surface 167 of the treatment device 160 is adjacent to the user'steeth and the bite guard 168 is being held between the user's upper andlower teeth.

The inner surface 167 of the housing 161 comprises a first EMRtransmissive portion 169A and a second EMR transmissive portion 169B.Each of the first and second EMR transmissive portions 169A, 169B isconfigured to enable the EMR 199 to be emitted from the first and secondEMR source portions 165A, 165B and through the housing 161. Morespecifically, in the exemplified embodiment the first EMR transmissiveportion 169A is positioned adjacent to the first EMR source portion 165Aand the second EMR transmissive portion 169B is positioned adjacent tothe second EMR source portion 165B. Thus, when the first and second EMRsource portions 165A, 165B are in the on state, the EMR 199 transmitsfrom the first EMR source portion 165A through the first EMRtransmissive portion 169A and from the second EMR source portion 165Bthrough the second EMR transmissive portion 169B.

The first and second EMR transmissive portions 169A, 169B can be formedof any material that enables the EMR 199 to transmit through the housing161 at the location of the first and second EMR transmissive portions169A, 169B. Thus, each of the first and second EMR transmissive portions169A, 169B may be a transparent material such as to form a window incertain embodiments. In other embodiments the first and second EMRtransmissive portions 169A, 169B may be opaque or translucent, but stilltransmissive to the EMR 199 being transmitted by the first and secondEMR source portions 165A, 165B. In other embodiments the first andsecond EMR transmissive portions 169A, 169B may be thinned regions ofthe housing 161. In still other embodiments the first and second EMRtransmissive portions 169A, 169B may be openings formed through thehousing 161 that expose the first and second EMR source portions 165A,165B.

As discussed above, the treatment device 160 comprises a switch 166 thatcontrols the on and off states of the EMR source 165. In the exemplifiedembodiment, the switch 166 is located within an opening 171 that isformed into the inner surface 167 of the housing 161 of the treatmentdevice 160. In such embodiments the switch 166 is normally biased into aclosed state so that the EMR source 165 is turned on and emitting theEMR 199. However, when the treatment device 160 is placed into thestorage state, the protuberance 135 extending from the floor 131 of thelongitudinal depression 130 protrudes into the opening 171, contacts theswitch 166 and transitions the switch 166 into the off state. Thus, whenthe treatment device 160 is in the storage state, the switch 166 isalways open so that the EMR source 165 is turned off (i.e., notreceiving power from the power source 164) and is not emitting the EMR199. When the treatment device is in the use state, the switch 166 isalways closed so that the EMR source 165 is turned on (i.e., receivingpower from the power source 164) and emitting the EMR 199.

Although the invention is described herein wherein the switch 166 is onewhich is biased into a closed position so that the EMR source 165 emitsthe EMR 199 at any time when the treatment device 160 is in the usestate, the invention is not to be so limited in all embodiments.Specifically, in certain other embodiments the housing 161 of thetreatment device 160 may include a depressible button switch, a slideswitch, or any other type of switch on a surface of the housing 161.Specifically, one of the side surfaces of the housing between the innerand outer surfaces 167, 163, or one of the inner or outer surfaces 167,163 may include such a depressible button switch or slide switch. Insuch an embodiment, when the treatment device 160 is in the use state,the user can then press the depressible button switch or slide the slideswitch to activate and/or deactivate the EMR source 165 to enable and/orprevent the EMR source 165 from emitting the EMR 199 as desired.

Referring to FIG. 5, a schematic longitudinal cross-section of a portionof the oral care implement 100 that includes the treatment device 160when the treatment device 160 is in the storage state is illustrated.When the treatment device 160 is in the storage state, the treatmentdevice 160 is nested within the longitudinal depression 130 of thehandle portion 120 of the body 105. More specifically, the inner surface167 of the treatment device 160 is positioned adjacent to (and in someembodiments in surface contact with) the floor 131 of the longitudinaldepression 130. Furthermore, the bite guard 168 of the treatment device160 extends into the aperture 133 of the longitudinal depression 130. Inthe exemplified embodiment, the aperture 133 of the longitudinaldepression 130 has a shape that corresponds with the shape of the biteguard 168 so that the distal edge of the bite guard 168 is in contactwith the floor 136 of the aperture 133. Of course, the invention is notto be so limited and the aperture 133 can take on any shape that enablesthe bite guard 168 to be nested therein when the treatment device 160 isin the storage state. In embodiments whereby the bite guard 168 isomitted, the aperture 133 may also be omitted.

Furthermore, when the treatment device 160 is in the storage state, theouter surface 163 of the treatment device 160 is substantially flushwith the outer surface 125 of the handle portion 120 such that a smoothcontinuous transition between the treatment device 160 and the handleportion 120 is achieved. Thus, the handle 129, which comprises thecombined handle portion 120 and treatment device 160, is free of ridgesand undulations in the transition regions between the treatment device160 and the handle portion 120, which enhances user comfort when a useris handling the handle 129 of the toothbrush 100.

Furthermore, as discussed above when the treatment device 160 is in thestorage state, the protuberance 135 that extends from the floor 131 ofthe longitudinal depression 130 protrudes into the opening 171 in thetreatment device 160 so as to transition the switch 166 from the closedstate to the open state. Specifically, the protuberance 135 depressesthe switch 166, which causes the switch 166 to enter into the open stateso that the EMR source 165 is not emitting the EMR 199. Thus, inaccordance with the exemplified embodiment, at all times when thetreatment device 160 is in the storage state, the EMR source 165 ispowered off because the switch 166 is open. Stated another way, when thetreatment device 160 is in the storage state, the switch 166 isautomatically maintained or actuated into the open state (such that theEMR source 165 is not emitting the EMR 199). Furthermore, in theexemplified embodiment when the treatment device 160 is in the storagestate, the switch 166 is inaccessible and not visible or exposed to auser. Moreover, in accordance with the exemplified embodiment, at alltimes when the treatment device 160 is in the use state, the EMR source165 is powered on because the switch 166 is closed. Stated another way,when the treatment device 160 is in the use state, the switch 166 isautomatically maintained or actuated into the closed state (such thatthe EMR source 165 is emitting the EMR 199). Of course, as discussedabove alternative structural components for the switch are possible inother embodiments, including conventional button switches, slideswitches and the like.

Finally, when the treatment device 160 is in the storage state, theconnector 162 of the housing 161 of the treatment device 160 coupleswith the connector 134 of the handle portion 120 to secure the treatmentdevice 160 in the storage state. More specifically, in the exemplifiedembodiment the connector 162 of the housing 161 of the treatment device160, which is a protrusion, nests within the connector 134 of the handleportion 120, which is a notch or opening. The connector 134 furtherincludes a flange 138 that extends above the opening to prevent theprotrusion of the housing 161 from easily disengaging or being removedfrom the opening. Thus, a user must apply some amount of force (i.e.,pulling the treatment device 160 and the body 105 in oppositedirections) to separate the treatment device 160 from the longitudinaldepression 130 due to the corresponding connectors 134, 162. Although aspecific structural arrangement of the connectors 134, 162 isillustrated, the invention is not to be limited by the mechanisms usedfor securing the treatment device 160 to the handle portion 120 in allembodiments, and in other embodiments adhesion, fasteners, hook-and-loopfasteners, springs, other mechanical interlocking features or the likecan be used to secure the treatment device 160 to the handle portion 120in the storage state while enabling the treatment device 160 to beeasily transitioned from the storage state to the use state.

The oral care implement 100 is used as follows. The tooth cleaningelements 115 can be used to clean a user's teeth in the normal manner.Either before or after cleaning the user's teeth with the tooth cleaningelements 115 (or at any other desired time), a user may apply an oralcare material to the user's teeth. This oral care material may be onethat has an efficacy that is increased or activated by the EMR 199 thatis generated by the EMR source 165. The specific types of oral carematerial that may be used are discussed in more detail below. Afterapplying the oral care material to the user's teeth, the treatmentdevice 160 is altered into the use state so that the switch is closedand the EMR source 165 is powered on and emitting the EMR 199 from thehousing 161. The user will hold the treatment device 160 up to theuser's teeth so that the EMR 199 can be emitted directly to the user'steeth that have been pre-coated with the oral care material. The usermay hold the treatment device 160 up to his or her teeth by physicallyholding the housing 161 with his or her hand or by biting the bite guard168 so as to hold the bite guard 168 between the user's upper and lowerteeth. When positioned as discussed above, the EMR 199 will be emitteddirectly onto the user's teeth, thereby enhancing the effects of thepre-coated oral care material. After the user has held the treatmentdevice 160 up to his or her teeth for a desired period of time, the usercan recouple the treatment device 160 to the body 105 of the oral careimplement 100 for storage (i.e., the storage state). Thus, the oral careimplement 100 provides a mechanism (i.e., the treatment device 160) forenhancing the benefits/efficacy of an oral care material and thatmechanism is provided so as to be couplable to the body 105 of the oralcare implement 100.

Referring to FIGS. 6 and 7 concurrently, an oral care implement 200 isillustrated in accordance with another embodiment of the presentinvention. The oral care implement 200 is similar to the oral careimplement 100 in many respects, and thus similar features will besimilarly numbered except that the 200-series of numbers will be used.Certain features of the oral care implement 200 may be similarlynumbered as the oral care implement 100 but might not be described indetail herein in the interest of brevity, it being understood that thediscussion of the similar component on the oral care implement 100applies. Furthermore, features of the oral care implement 100 describedabove that are not illustrated on the oral care implement 200 or thatare illustrated on the oral care implement 200 but not numbered areapplicable to the oral care implement 200 in certain embodiments andvice versa. Thus, various combinations of the description below withregard to the oral care implement 200 and the description above withregard to the oral care implement 100 are within the scope of thepresent invention in some embodiments.

The oral care implement 200 generally comprises a body 205 having ahandle portion 220 and a head portion 210 with tooth cleaning elements215 extending from the head portion 210. More specifically, the handleportion 220 extends from a proximal end 221 to a distal end 222 along alongitudinal axis B-B, and the head portion 210 is coupled to the distalend 222. Furthermore, the oral care implement 200 also comprises atreatment device 260 that is coupled to the body 205. The treatmentdevice 260 is similar to the treatment device 160 and comprises ahousing 261 that contains a power source 264, a controller or processor270, a switch 266 and an EMR source 265 that are operably coupledtogether. The treatment device 260 also includes a bite guard 268 thatextends from an inner surface 267 of the housing 261. The treatmentdevice 260 operates in a similar manner to the treatment device 160 andis coupled to the body 205 in a manner similar to that described abovewith regard to the treatment device 160.

The main difference between the oral care implement 200 and the oralcare implement 100 is that the body 205 of the oral care implement 200has an inner surface 206 that defines a reservoir or internal cavity 280for storing a store of oral care material 281. Although the exemplifiedembodiment illustrates an internal cavity 280 in the body 205, theinvention is not to be so limited in all embodiments and in someembodiments the oral care implement 200 simply comprises a store of oralcare material 281 without the location of the store of oral carematerial 281 being limiting of the invention. The store of oral carematerial 281 may be located within the head portion 210 of the oral careimplement 200, within the handle portion 220 of the oral care implement200 or elsewhere as desired.

As noted briefly above, in certain embodiments it is desired that theoral care material 281 has an efficacy that is increased or activated bythe EMR generated by the EMR source 265. Thus, after a user applies theoral care material 281 to his or her teeth, the user can use thetreatment device 260 in the manner described above with regard to thetreatment device 160 to emit EMR to the user's teeth to increase theefficacy of the oral care material 281 or to activate the oral carematerial 281.

The oral care material may be any type of material that is desired toapply to a user's teeth and or other oral surfaces in order to impartbenefits to the user's teeth and other oral surfaces. In one embodiment,the oral care material is a tooth whitening agent or solution. In suchembodiments any suitable tooth whitening agent can be used, includingwithout limitation peroxide containing tooth whitening compositions.Other whitening agents may include an oxidizer such as for examplewithout limitation carbamide peroxide, carbamyl peroxide, sodiumpercarbonate, perhydrol urea, peroxyacetic acid, and hydrogen peroxide.

While a tooth whitening agent is one of the preferred oral carematerials in the present invention, other oral care materials can beused with the invention. Contemplated oral care materials includewithout limitation, antibacterial agents; oxidative or whitening agents;enamel strengthening or repair agents; tooth erosion preventing agents;tooth sensitivity ingredients; gum health actives; nutritionalingredients; tartar control or anti-stain ingredients; enzymes; sensateingredients; flavors or flavor ingredients; breath fresheningingredients; oral malodor reducing agents; anti-attachment agents orsealants; diagnostic solutions; occluding agents, dry mouth reliefingredients; catalysts to enhance the activity of any of these agents;colorants or aesthetic ingredients; and combinations thereof. The oralcare material, however, is preferably free of (i.e., is not) toothpastein some embodiments. Instead, the oral care material is intended toprovide benefits in addition to merely brushing one's teeth.Furthermore, regardless of the exact oral care material selected to beused with the oral care implement 200, the oral care material has anefficacy that is increased or activated by EMR generated by the EMRsource 265.

In addition to having the internal cavity 280 for storing the oral carematerial 281, the oral care implement 200 also includes an applicator285 that is coupled to the body 205. The applicator 285 is fluidlycoupled to the store of oral care material 281 so that the oral carematerial 281 can be easily dispensed through the applicator 285 directlyto a user's teeth and/or other oral surfaces. More specifically, theapplicator 285 comprises a dispensing orifice 286 that provides apassageway from the store of oral care material 281 to a dispensingsurface 287 of the applicator 285.

In the exemplified embodiment, the applicator 285 is formed out of aresilient material, such as a thermoplastic elastomer or otherrubber-like material. Of course, the invention is not to be so limitedin all embodiments and the applicator 285 can be formed of othermaterials in other embodiments. Forming the applicator 285 out of athermoplastic elastomer or other resilient material increases thecomfort to a user when the applicator 285 is used to dispense the oralcare material 281 to the user's teeth or other oral surfaces.Specifically, in use the applicator 285 is made to directly contact theuser's teeth or other oral surfaces upon which it is desired to dispenseand/or apply the oral care material 281. Using a soft or resilientmaterial reduces the likelihood of injury to the user during thisdispensing.

In the exemplified embodiment, the applicator 285 further includes aplurality of protuberances 288 extending from the dispensing surface287. Such protuberances 288 may further increase the ability to applyand wipe the oral care material 281 directly to the desired surface. Ofcourse, in other embodiments the protuberances 288 may be omitted andthe dispensing surface 287 of the applicator 285 may be a planar surfacethat is either flat or angled/inclined as illustrated.

In the exemplified embodiment, the applicator 285 extends or protrudesfrom the proximal end 221 of the handle portion 220 of the body 205. Ofcourse, the invention is not to be so limited and the applicator 285 canbe positioned at other locations on the oral care implement 200 asdesired. However, positioning the applicator 285 so as to extend fromthe proximal end 221 of the handle portion 220 of the body 205facilitates ease of use of the applicator 285 for dispensing the oralcare material 281.

Furthermore, in the exemplified embodiment the oral care implement 200includes a cap 289 that couples to the proximal end 221 of the handleportion 220 of the body 205 to cover and protect the applicator 285 whenthe applicator 285 is not being used. The cap 289 preferably conforms tothe shape of the handle portion 220 of the body 205 so that when the cap289 is coupled to the handle portion 220 of the body 205 a smoothcontinuous surface is formed that is free of ridges, bumps and otherundulations to enhance user comfort when the user is manipulating thehandle portion 220. Of course, the cap 289 is not necessary in allembodiments and it may be omitted if desired.

Although described herein with the oral care material 281 stored withinthe internal cavity 280 of the body 205, the invention is not to be solimited in all embodiments. In certain embodiments the oral carematerial 281 can be stored within a separate dispenser that isdetachably coupled to the body 205. The dispenser may be stored withinthe body 205 or otherwise attached to the body 205. In such embodiments,the dispenser may comprise an applicator comprising a dispensing orificefor dispensing the oral care material 281 to the user's teeth and/orother oral surfaces.

When it is desired to use the treatment device 260, the treatment device260 is transitioned from the storage state to the use state whereby thetreatment device 260 may be detached from the body 205, or may behingedly or otherwise attached to the body 305 but accessible for use.First, the applicator 285 of the body 205 is positioned against theuser's teeth or other oral surfaces to dispense the oral care material281 onto the user's teeth or other oral surfaces. After the desiredamount of the oral care material 281 has been dispensed onto the user'steeth or other oral surfaces, the inner surface 267 of the housing 261of the treatment device 260 is positioned adjacent to the user's teethto emit the EMR onto the user's teeth that have been pre-coated with theoral care material. The EMR will improve the efficacy of the oral carematerial 281 to speed up or increase the beneficial result achieved bythe oral care material 281 (such as tooth whitening). After the EMR hasbeen applied for a desired amount of time, the treatment device 260 isplaced back into the storage state. Once in the storage state, theswitch 266 is automatically opened (or can be manually opened in otherembodiments) and the EMR source 265 no longer emits the EMR. These stepscan be repeated for as many uses as desired.

Referring to FIGS. 8-11 concurrently, an oral care implement 300 will bedescribed in accordance with yet another embodiment of the presentinvention. Again, the oral care implement 300 is similar to the oralcare implement 100 in many respects, and thus similar features will besimilarly numbered except that the 300-series of numbers will be used.Certain features of the oral care implement 300 may be similarlynumbered as the oral care implement 100 but might not be described indetail herein in the interest of brevity, it being understood that thediscussion of the similar component on the oral care implement 100applies. Furthermore, features of the oral care implement 100 describedabove that are not illustrated on the oral care implement 300 or thatare illustrated on the oral care implement 300 but not numbered areapplicable to the oral care implement 300 in certain embodiments andvice versa. Thus, various combinations of the description below withregard to the oral care implement 300 and the description above withregard to the oral care implements 100, 200 are within the scope of thepresent invention in some embodiments.

The oral care implement 300 generally comprises a body 305 having ahandle portion 320 and a head portion 310 with tooth cleaning elements315 extending from the head portion 310. More specifically, the handleportion 320 extends from a proximal end 321 to a distal end 322 along alongitudinal axis C-C, and the head portion 310 is coupled to the distalend 322 of the handle portion 320. Furthermore, the oral care implement300 also comprises a treatment device 360 that is coupled to the body305. The treatment device 360 is similar to the treatment device 160 andcomprises a housing 361 that contains a power source 364, a controlleror processor 370, a switch 366 and an EMR source 365 that are operablycoupled together. The EMR source 365 comprises a first EMR sourceportion 365A and a second EMR source portion 365B that emit EMR 399through a first EMR transmissive portion 369A and a second EMRtransmissive portion 369B on the housing 361. The treatment device 360also includes a bite guard 368 that extends from an inner surface 367 ofthe housing 361. The treatment device 360 operates in a similar mannerto the treatment device 160 as discussed above.

The body 305 of the oral care implement 300 comprises a longitudinaldepression 330 having a floor 331. In this embodiment, the floor 331 ofthe longitudinal depression 330 has a convex surface that mates with aconcave inner surface 367 of the treatment device 360 as discussed inmore detail below. An aperture 333 is formed into the floor 331 of thelongitudinal depression 330 for accommodating the bite guard 368 of thetreatment device 360 when the treatment device 360 is in the storagestate (FIG. 11). Furthermore, a protuberance 335 extends upwardly fromthe floor 331 of the longitudinal depression 330 for mating with anopening 371 and switch 366 on the treatment device 360 in much the samemanner as discussed above with regard to the oral care implement 100.The treatment device 360 is coupled to the body 305 in a manner similarto that described above with regard to the treatment device 160.Specifically, the treatment device 360 has a connector 362 and thelongitudinal depression 330 has a connector 334 that mate with oneanother when the treatment device 360 is in the storage state. However,the body 305 of the oral care implement 300 also includes a cavity 337that houses an applicator 385 of the treatment device 360 as discussedbelow.

In addition to housing the power source 364, the EMR source 365, theprocessor 370 and the switch 366, the treatment device 360 alsocomprises a reservoir or internal cavity 380 for storing a store of oralcare material 381. The oral care material 381 can be any of the oralcare materials 281 discussed above such that the efficacy of the oralcare material 381 is increased or activated by EMR generated by the EMRsource 365. The internal features of the treatment device 360 include awall 369 that separates the internal cavity 380 from the electroniccomponents (i.e., the power source 364, the EMR source 365, theprocessor 370 and the switch 366). Thus, despite containing the oralcare material 381, the electronic components of the treatment device 360are protected against liquid/water damage by the wall 369. Statedanother way, the wall 369 isolates the internal cavity 380 and hencealso the oral care material 381 from the electronic components.

Additionally, the treatment device 360 also comprises an applicator 385that is fluidly coupled to the oral care material 381 contained withinthe internal reservoir 380. Specifically, the applicator 385 comprises adispensing orifice 386 that forms a passageway from the internal cavity380 to a dispensing surface 387 of the applicator 385. The applicator385 is preferably formed of a resilient material such as a thermoplasticelastomer as discussed above with regard to the applicator 285. Theapplicator 385 can be used to directly contact the user's teeth and/orother oral surfaces to directly apply the oral care material 381 to theuser's teeth and/or other oral surfaces. In some embodiments thedispensing action can be achieved by squeezing the housing 361 of thetreatment device 360. In such embodiments, the housing 361 of thetreatment device 360, or portions thereof that surround the internalcavity 380, may be formed of a resilient and depressible material (i.e.,a thin plastic, a thermoplastic elastomer or the like). In otherembodiments the treatment device 360 may include a pump mechanism forpumping the oral care material 381 from the internal reservoir 380through the applicator 385 for dispensing as desired. Of course, othertechniques for dispensing the oral care material 381 are possible.

As noted above, in this embodiment the inner surface 367 of the housing361 of the treatment device 360 is concave. This is done so that theinner surface 367 of the housing 361 of the treatment device 360 has ashape that corresponds with the shape and/or curvature of a user'steeth. Thus, when the treatment device 360 is held up to a user's teethas has been discussed above, the inner surface 367 of the housing 361 ofthe treatment device 360 will be aligned with the user's teeth so thatthe EMR 399 generated/emitted by the EMR source 365 of the treatmentdevice 360 will be directed onto the user's teeth. Any of theembodiments of the treatment devices discussed herein can include theconcave inner surface.

When the treatment device 360 is in the storage state as illustrated inFIG. 11, the treatment device 360 is disposed within the longitudinaldepression 330 on the body 305 of the oral care implement 300 so thatthe inner surface 367 of the treatment device 360 is embedded in thehandle portion 320 (i.e., unexposed and not visible). Furthermore, thebite guard 368 of the treatment device 360 extends into the aperture 333in the longitudinal depression 330. Additionally, the protuberance 335on the longitudinal depression 330 extends into the opening 371 andcontacts the switch 366 so as to open the switch. In this way, the EMRsource 365 is powered off because the switch is open 366 when thetreatment device 360 is in the storage state. However, as discussedabove when the treatment device 360 is in the use state (such as bybeing detached from the body 305 as illustrated in FIG. 8), the switch366 automatically closes so that the EMR source 365 is powered on andemitting the EMR 399. Of course, other types of switches can be usedthat are not automated in other embodiments.

Furthermore, when the treatment device 360 is in the storage state, theconnector 362 of the treatment device 360 mates with the connector 334of the longitudinal depression 330. Furthermore, the applicator 385 ofthe treatment device 360 extends into the cavity 337 in the body 305 ofthe oral care implement 300. Thus, the applicator 385 is protectedagainst damage when the treatment device 360 is in the storage state.Although not illustrated, in some embodiments there may be a closure pinextending into the cavity 337 from a rear wall of the cavity 337 thatcloses the dispensing orifice 386 of the applicator 385 when thetreatment device 360 is in the storage state. Such a closure pin mayprevent leakage of the oral care material 381 during storage of thetreatment device 360.

When it is desired to use the treatment device 360, the treatment device360 is transitioned from the storage state to the use state whereby thetreatment device 360 may be detached from the body 305, or may behingedly or otherwise attached to the body 305 but accessible for use.First, the applicator 385 of the treatment device 360 is positionedagainst the user's teeth or other oral surfaces to dispense the oralcare material 381 onto the user's teeth or other oral surfaces. Afterthe desired amount of the oral care material 381 has been dispensed ontothe user's teeth or other oral surfaces, the inner surface 367 of thehousing 361 of the treatment device 360 is positioned adjacent to theuser's teeth to emit the EMR 399 onto the user's teeth that have beenpre-coated with the oral care material. The EMR 399 will improve theefficacy of the oral care material 381 to speed up or increase thebeneficial result achieved by the oral care material 381 (such as toothwhitening). After the EMR 399 has been applied for a desired amount oftime, the treatment device 360 is placed back into the storage state.Once in the storage state, the switch 366 is automatically opened (orcan be manually opened in other embodiments) and the EMR source 365 nolonger emits the EMR 399. These steps can be repeated for as many usesas desired.

In certain embodiments, the internal reservoir 380 can be refillable sothat upon depletion of the oral care material 381 from the internalreservoir 380, more of the oral care material 381 can be added to theinternal reservoir 380. Of course, the invention is not to be so limitedin all embodiments and in certain other embodiments the internalreservoir 380 may not be refillable such that upon depletion of the oralcare material 381 the treatment device 360 may be disposed. In someembodiments the EMR source 365 or the power source 364 may have alife-span that matches that of the oral care material 381 so that upondepletion of the oral care material 381 the EMR source 365 and/or thepower source 364 would also need to be replaced, in which case it may bedesirable to replace the entire treatment device 360.

Referring now to FIGS. 12-14 concurrently, an oral care implement 400will be described in accordance with yet another embodiment of thepresent invention. The oral care implement 400 is similar to the oralcare implement 100 in many respects, and thus similar features will besimilarly numbered except that the 400-series of numbers will be used.Certain features of the oral care implement 400 may be similarlynumbered as the oral care implement 100 but might not be described indetail herein in the interest of brevity, it being understood that thediscussion of the similar component on the oral care implement 100applies. Furthermore, features of the oral care implement 100 describedabove that are not illustrated on the oral care implement 400 or thatare illustrated on the oral care implement 400 but not numbered areapplicable to the oral care implement 400 in certain embodiments andvice versa. Thus, various combinations of the description below withregard to the oral care implement 400 and the description above withregard to the oral care implements 100, 200, 300 are within the scope ofthe present invention in some embodiments.

The main difference between the oral care implement 400 and the oralcare implement 100 is that in the oral care implement 400 the componentsof the treatment device of the oral care implement 100, such as thepower source, the EMR source, the switch and the like, are located on adepression that is formed into the body of the oral care implement 400.The general features and use of the oral care implement 400 is otherwisesimilar to that of the oral care implement 100 that has been describedabove.

The oral care implement 400 generally comprises a body 405 having ahandle portion 420 and a head portion 410. The handle portion 420extends from a proximal end 421 to a distal end 422 along a longitudinalaxis D-D, and the head portion 410 is coupled to the distal end 422 ofthe handle portion 420. The handle portion 420 of the oral careimplement 400 has an outer surface 425 that includes the front and rearsurfaces thereof. A plurality of tooth cleaning elements 415 extend fromthe head portion 410 of the oral care implement 400.

The oral care implement 400 further comprises a depression 430 formedinto the outer surface 425 of the handle portion 420, the depression 430having a floor 431 and upstanding sidewalls 432 extending from the floor431 to the outer surface 425 of the handle portion 420. The depression430, in the exemplified embodiment, is located on the front surface ofthe handle portion 420 near the proximal end 421 of the handle portion420, and more specifically in a proximal region 403 of the handleportion 420 that is between the proximal end 421 of the handle portion420 and a thumb grip region 426 of the handle portion 420. Of course,the invention is not to be so limited and the depression 430 can beotherwise located along the handle portion 420. In the exemplifiedembodiment, the depression 430 is longitudinally elongated such that itextends axially with the longitudinal axis D-D.

In the exemplified embodiment, the floor 431 of the depression 430 isconcave. Thus, the floor 431 of the depression 430 has a shape thatcorresponds with the shape of a user's teeth. The benefits of this willbe appreciated from the discussion of the use of the oral care implement400 to emit EMR to a user's teeth and other oral surfaces as discussedbelow.

The oral care implement 400 further comprises a power source 464disposed within the body 405 and an electromagnetic radiation (EMR)source 465 disposed within the handle portion 420. More specifically,the EMR source 465 is located within the handle portion 420 at aposition along the depression 430. The EMR source 465 is operablycoupled to the power source 464 to provide power to the EMR source 465.More specifically, in the exemplified embodiment the power source 464and the EMR source 465 are both operably coupled to a controller orprocessor 470, although the processor 470 may be omitted in otherembodiments. When power is being provided to the EMR source 465, the EMRsource 465 emits EMR. Furthermore, due to the positioning of the EMRsource 465, when power is provided to the EMR source 465, the EMR sourceemits EMR from the floor 431 of the depression 430.

In the exemplified embodiment, the oral care implement 400 furthercomprises a bite guard 468 protruding from the floor 431 of thedepression 430. Furthermore, a first EMR transmissive portion 469A and asecond EMR transmissive portion 469B are located adjacent to the biteguard 468. The EMR source 465 includes a first EMR source portion 465Apositioned beneath and adjacent to the first EMR transmissive portion469A and a second EMR source portion 465B positioned beneath andadjacent to the second EMR transmissive portion 469B. Thus, when the EMRsource portion 465 is powered on, EMR is emitted from the first EMRsource portion 465A through the first EMR transmissive portion 469A andfrom the second EMR source portion 465B through the second EMRtransmissive portion 469B.

In the exemplified embodiment, the bite guard 468 is a semi-circleshaped feature that extends along the longitudinal axis D-D.Furthermore, each of the first and second EMR source portions 465A, 465Bare also elongated along the longitudinal axis adjacent to the biteguard 468 such that the bite guard 468 is positioned in between thefirst and second EMR source portions 465A, 465B. Although illustrated asbeing semi-circle shaped, the invention is not to be so limited and thebite guard 468 can take on any other shape such as those described abovewith regard to the bite guard 168. Furthermore, the bite guard 468 canbe formed integrally with the body 405 of the oral care implement 400out of a rigid plastic material such as those described above, or thebite guard 468 may be formed of a thermoplastic elastomer and then latercoupled to the body 405 of the oral care implement 400. Furthermore, insome embodiments the bite guard 468 may be altogether omitted.

An opening 471 is formed into the floor 431 of the depression 430 and aswitch 466 is positioned within the opening 471. When the switch 466 isin a closed state, power is supplied from the power source 464 to theEMR source 465 so that the EMR source 465 emits EMR from the floor 431of the depression 430. When the switch 466 is in an open state, power isprevented from being supplied to the EMR source 465 so that EMR is notemitted from the EMR source 465. The switch 466 may be one which isbiased into a closed state such as the switch 166 discussed above.

The oral care implement 400 also comprises a cover 440 that is coupledto the handle portion 420. The cover 440 is alterable between a storagestate in which the depression 430 is enclosed by the cover (FIG. 12) anda use state in which the floor 431 of the depression 430 is exposed(FIG. 13). The cover 440 comprises a connector 442 that correspondinglymates with a connector 434 on the sidewalls 432 of the depression 430when the cover 440 is coupled to the handle portion 420 in the storagestate. When the cover 440 is in the use state as illustrated in FIG. 13,the switch 466 is in a closed state and EMR is being emitted from theEMR source 465 through the floor 431 of the depression 430. Of course,the switch need not be one which is biased into a closed state in allembodiments and other types of switches can be used such as press buttonswitches, slide switches and the like.

The cover 440 has an inner surface 441 and an outer surface 443. Anaperture 444 is formed into the inner surface 441 of the cover 440.Furthermore, a protuberance 445 protrudes from the inner surface 441 ofthe cover 440. When the cover 440 is in the storage state (see FIGS. 12and 14), the bite plate 468 is disposed within the aperture 444 of thecover 440 and the protuberance 445 of the cover 440 extends into theopening 471 in the floor 431 of the depression 430 so as to contact theswitch 466. More specifically, the protuberance 445 transitions theswitch 466 from the biased closed state to an open state whereby poweris not supplied to the EMR source 465 and EMR is therefore not emittedby the EMR source 465. Thus, when the cover 440 is in the storage state,the EMR is not being emitted.

The oral care implement 400 can be used as follows. The tooth cleaningelements 415 on the oral care implement 400 can be used to brush auser's teeth in a conventional manner. Before or after brushing or atany other desired time, an oral care material, such as any of the oralcare materials discussed above, can be applied to the user's teeth orother oral surfaces. After the oral care material is applied to theuser's teeth or other oral surfaces, the cover 440 can be altered fromthe storage state into the use state. This can be achieved by completelyseparating the cover 440 from the body 405 as depicted in theexemplified embodiment, or by otherwise moving the cover 440 so as toexpose the floor 431 of the depression 430.

Once the floor 431 of the depression 430 is exposed, the floor 431 ofthe depression 430 is positioned adjacent to a user's teeth. This can beachieved by a user simply holding the body 405 of the oral careimplement 400 so that the floor 431 of the depression 430 is adjacent toa user's teeth. In other embodiments, the user may grip the bite guard468 between his or her teeth in order to maintain the floor 431 of thedepression 430 adjacent to and aligned with the user's teeth. As notedabove, upon altering the cover 440 into the use state, the switch 466will be automatically closed (or can be manually closed by a userpressing a button switch or sliding a slide switch). When the switch 466is closed, the EMR source 465 is powered and begins to emit EMR from thefloor 431 of the depression 430. Thus, when the cover 440 is in the usestate and the floor 431 of the depression 430 is positioned adjacent toa user's teeth, the EMR is being emitted directly onto the user's teeth.Thus, the benefits of the EMR combined with the desired oral carematerial can be imparted to the user using the oral care implement 400.

When the cover 440 is in the storage state, the outer surface 425 of thehandle portion 420 is substantially flush with the outer surface 443 ofthe cover 440. This results in a smooth, continuous outer surface of thehandle to be gripped by a user during manipulation of the oral careimplement 400 during use to prevent injury to the user's hand andenhance comfort.

Referring now to FIG. 15, an oral care implement 500 will be describedin accordance with yet another embodiment of the present invention. Theoral care implement 500 is similar to the oral care implement 400 interms of general structure, but has some modifications and additions.Thus, the oral care implement 500 is similar to the oral care implement400 in many respects, and thus similar features will be similarlynumbered except that the 500-series of numbers will be used. Certainfeatures of the oral care implement 500 may be similarly numbered as theoral care implement 400 but might not be described in detail herein inthe interest of brevity, it being understood that the discussion of thesimilar component on the oral care implement 400 applies. Furthermore,features of the oral care implement 400 described above that are notillustrated on the oral care implement 500 or that are illustrated onthe oral care implement 500 but not numbered are applicable to the oralcare implement 500 in certain embodiments and vice versa. Thus, variouscombinations of the description below with regard to the oral careimplement 500 and the description above with regard to the oral careimplements 100, 200, 300, 400 are within the scope of the presentinvention in some embodiments.

In FIG. 15, a schematic cross-sectional view of the oral care implement500 is illustrated, similar to the schematic cross-sectional viewdepicted in FIG. 14. Thus, the features of the oral care implement 500that are not illustrated are the same as the features of the oral careimplement 400 and will not be described below in the interest ofbrevity.

Of those features that are depicted, the oral care implement 500comprises a body 505 that includes a handle 520. A power source 564, acontroller or processor 570, a switch 566 and an EMR source 565 aredisposed within the body 505. The power source 565, the processor 570,switch 566 and EMR source 565 are operably coupled together in themanner that has been discussed above to enable the EMR source 565 toemit EMR when the switch 566 is closed and to prevent the EMR source 565from emitting EMR when the switch 566 is open.

In addition to those electronic components, the oral care implement 500also comprises a store of oral care material 581. The store of oral carematerial 581 is preferably an oral care material, such as any of theoral care materials discussed above, that has an efficacy that isincreased or activated by EMR. In the exemplified embodiment, the storeof oral care material 581 is disposed within an internal cavity 580 ofthe body 505 of the oral care implement 500. However, the invention isnot to be so limited in all embodiments and in certain other embodimentsthe store of oral care material 581 can be disposed within a dispenserthat is detachably coupled to the body.

In the exemplified embodiment, as noted above, the oral care implement500 comprises an internal cavity 580 that houses or contains the oralcare material 581. A wall 569 is provided within the body 505 of theoral care implement 500 that seals off the internal cavity 580 from theelectronic components to prevent the oral care material 581 fromdamaging the electronic components. Furthermore, in the exemplifiedembodiment an applicator 585 is coupled to the body 505 so as to befluidly coupled with the oral care material 581 housed within theinternal cavity 580. In that regard, the applicator 585 comprises adispensing orifice 586 that creates a passageway from the oral carematerial 581 to a dispensing surface 587 of the applicator 585. Theapplicator 585 can be formed of a thermoplastic elastomer or any othermaterial as discussed above with regard to the applicator 285. The oralcare implement 500 further includes a cap 589 that covers the applicator585 when the applicator 585 is not being used to protect the applicator585 and prevent leakage of the oral care material 581 through theapplicator 585.

The oral care implement 500 further includes a cover 540 that is similarin all regards to the cover 440 discussed above. The cover 540 isalterable between a storage state (FIG. 15) and a use state (notillustrated with regard to this particular embodiment, but easilyunderstood from the entirety of the description above). In the storagestate, the protuberance 545 of the cover 540 extends into the opening571 in the floor 531 of the depression 530 to cause the switch 566 to beopened. Furthermore, the connectors 542 on the cover 540 matinglycooperate with the connectors 434 of the body 505 to couple the cover540 to the body 505 in the storage state.

During use, a user can brush his or her teeth using the oral careimplement 500 in the conventional fashion. When it is desired to applythe oral care material 581 to the user's teeth or other oral surfaces,the cap 589 is removed from the body 505 to expose the applicator 585.Then, the applicator 585 is contacted against the user's teeth or otheroral surfaces and the oral care material 581 is dispensed directly ontothe user's teeth or other oral surfaces. The oral care material 581 maybe dispensed by a pump or by manual squeezing of the area of the body505 that surrounds the internal cavity 580. After the desired amount ofthe oral care material 581 has been applied to the user's teeth or otheroral surfaces, the cover 540 is altered into the use state. The cover540 may be completely detached from the body 505 in the use state, or itmay simply be altered in any manner that exposes the floor 531 of thedepression 530. Once the floor 531 of the depression 530 is exposed, thefloor 531 of the depression 530 is positioned adjacent to the user'steeth or other oral surfaces. The user may place the bite guard 568between his or her teeth if desired, or if the bite guard 568 is omittedthe user may simply hold the oral care implement 500 in a position sothat the floor 531 of the depression 530 is adjacent to his or herteeth. While the oral care implement 500 is maintained in this position,the EMR is being emitted from the EMR source 565. After a desired amountof time has expired, the user can pull the oral care implement 500 awayfrom his or her teeth and replace the cover 540 back onto the body 505of the oral care implement 500.

Referring now to FIG. 16, an oral care implement 600 will be describedin accordance with yet another embodiment of the present invention. Theoral care implement 600 is similar to the oral care implement 400 interms of general structure, but has some modifications and additions.Thus, the oral care implement 600 is similar to the oral care implement400 in many respects, and thus similar features will be similarlynumbered except that the 600-series of numbers will be used. Certainfeatures of the oral care implement 600 may be similarly numbered as theoral care implement 400 but might not be described in detail herein inthe interest of brevity, it being understood that the discussion of thesimilar component on the oral care implement 400 applies. Furthermore,features of the oral care implement 400 described above that are notillustrated on the oral care implement 600 or that are illustrated onthe oral care implement 600 but not numbered are applicable to the oralcare implement 600 in certain embodiments and vice versa. Thus, variouscombinations of the description below with regard to the oral careimplement 600 and the description above with regard to the oral careimplements 100, 200, 300, 400, 500 are within the scope of the presentinvention in some embodiments.

In FIG. 16, a schematic cross-sectional view of the oral care implement600 is illustrated, similar to the schematic cross-sectional viewdepicted in FIG. 14. Thus, the features of the oral care implement 600that are not illustrated are the same as the features of the oral careimplement 400 and will not be described below in the interest ofbrevity.

In this embodiment, the oral care implement 600 comprises a body 605having a handle portion 620 and a head portion (not illustrated). Acover 640 is coupled to the body 605 and alterable between a storagestate (illustrated in FIG. 16) and a use state (not illustrated withregard to this particular embodiment but easily understood from theother embodiments described herein). In the oral care implement 600, thepower source 664, the controller or processor 670 and the switch 666 aredisposed within the body 605 of the oral care implement 600. The maindifference between the oral care implement 600 and the oral careimplement 500 is that the oral care material 681 is disposed within thecover 640 rather than within the body 605.

Thus, in the oral care implement 600 the cover 640 has a hollow interiorthat defines an internal cavity 680 for containing the oral carematerial 681. Furthermore, the cover 640 has an applicator 685 coupledthereto, the applicator 685 being in fluid communication with the oralcare material 681. The applicator 685 comprises a dispensing orifice 686that provides a passageway from the internal cavity 680 to a dispensingsurface 687 of the applicator 685.

All other features of the oral care implement 600 are the same as hasbeen described above with regard to the oral care implements 400, 500.Thus, a depression 630 is formed into an outer surface 625 of the handleportion 620 of the body 605, the depression 630 comprising a floor 631.A bite guard 668 protrudes from the floor 631 of the depression 630.Furthermore, an opening 671 is formed into the floor 631 and the switch666 is disposed within the opening 671. Moreover, a protuberance 645extends from the cover 640. Thus, when the cover 640 is coupled to thehandle portion 620 of the body 605, the protuberance 645 extends intothe opening 671 to open the switch 666 in the manner as has beendescribed above.

The oral care implement 600 can be used as follows. The oral careimplement 600 can be used to brush a user's teeth in the conventionalmanner as desired. Furthermore, at desired times, the cover 640 can bemoved into the use state such as by being detached from the handleportion 620 of the body 605. Once detached from the handle portion 620of the body 605, the cover 640 can be used to dispense the oral carematerial 681 onto the user's teeth or other oral surfaces. Specifically,the applicator 685 can be made to contact the teeth, and then the oralcare material 681 can be dispensed directly onto the user's teeth viathe applicator 685. After the oral care material 681 is applied to auser's teeth, the floor 631 of the depression 630 can be placed adjacentto the user's teeth so that EMR can be emitted onto the user's teethfrom the EMR source 665A through the EMR transmissive portion 669A ofthe body 605. After a desired period of time has expired, the oral careimplement 600 can be moved away from the user's teeth and the cover 640can be replaced onto the handle portion 620 into the storage state.

As used throughout, ranges are used as shorthand for describing each andevery value that is within the range. Any value within the range can beselected as the terminus of the range. In addition, all references citedherein are hereby incorporated by referenced in their entireties. In theevent of a conflict in a definition in the present disclosure and thatof a cited reference, the present disclosure controls.

While the invention has been described with respect to specific examplesincluding presently preferred modes of carrying out the invention, thoseskilled in the art will appreciate that there are numerous variationsand permutations of the above described systems and techniques. It is tobe understood that other embodiments may be utilized and structural andfunctional modifications may be made without departing from the scope ofthe present invention. Thus, the spirit and scope of the inventionshould be construed broadly as set forth in the appended claims.

What is claimed is:
 1. A toothbrush comprising: a body comprising ahandle portion, a head portion and a longitudinal axis; a plurality oftooth cleaning elements extending from the head portion; and a treatmentdevice coupled to the body so as to be alterable between a storage stateand a use state, the treatment device comprising: a housing; a powersource disposed within the housing; and an electromagnetic radiation(EMR) source disposed within the housing and operably coupled to thepower source; wherein the handle portion of the body comprises alongitudinal depression, the treatment device nesting in thelongitudinal depression when the treatment device is in the storagestate.
 2. The toothbrush according to claim 1 wherein the housing of thetreatment device forms a transverse section of a handle of thetoothbrush along the length of the longitudinal depression when thetreatment device is in the storage state.
 3. The toothbrush according toclaim 1 wherein an outer surface of the housing of the treatment deviceis substantially flush with an outer surface of the handle portion ofthe body when the treatment device is in the storage state.
 4. Thetoothbrush according to claim 1 wherein the handle portion comprises anaperture formed into a floor of the longitudinal depression, thetreatment device further comprising a bite guard protruding from thehousing, the EMR source configured to emit EMR from the housing adjacentthe bite guard, and wherein the bite guard extends into the aperturewhen the treatment device is in the storage state.
 5. The toothbrushaccording to claim 4 wherein the EMR source comprises a first EMR sourceportion and a second EMR source portion, the bite guard located betweenthe first and second EMR source portions.
 6. The toothbrush according toclaim 1 wherein the longitudinal depression is located in a proximalsection of the handle portion, the head portion coupled to a distal endof the handle portion.
 7. A toothbrush comprising: a body comprising ahandle portion, a head portion and a longitudinal axis; a plurality oftooth cleaning elements extending from the head portion; and a treatmentdevice coupled to the body so as to be alterable between a storage stateand a use state, the treatment device comprising: a housing; a powersource disposed within the housing; and an electromagnetic radiation(EMR) source disposed within the housing and operably coupled to thepower source; wherein the housing comprises an inner surface, the EMRsource configured to emit EMR from the inner surface, and wherein theinner surface is embedded in the handle of the toothbrush when thetreatment device is in the storage state.
 8. The toothbrush according toclaim 7 wherein the inner surface is concave.
 9. A toothbrushcomprising: a body comprising a handle portion, a head portion and alongitudinal axis; a plurality of tooth cleaning elements extending fromthe head portion; and a treatment device coupled to the body so as to bealterable between a storage state and a use state, the treatment devicecomprising: a housing; a power source disposed within the housing; andan electromagnetic radiation (EMR) source disposed within the housingand operably coupled to the power source; a store of oral care material,wherein the oral care material has an efficacy that is increased oractivated by EMR generated by the EMR source.
 10. The toothbrushaccording to claim 9 wherein the store of oral care material is disposedwithin an internal cavity of the body, the toothbrush further comprisingan applicator comprising a dispensing orifice coupled to the body. 11.The toothbrush according to claim 10 wherein the applicator protrudesfrom a proximal end of the handle portion.
 12. The toothbrush accordingto claim 9 wherein the store of oral care material is disposed in adispenser that is coupled to the body, the dispenser comprising anapplicator comprising a dispensing orifice.
 13. The toothbrush accordingto claim 9 wherein the store of oral care material is disposed in thehousing of the treatment device, the treatment device comprising anapplicator comprising a dispensing orifice.
 14. A toothbrush comprising:a body comprising a handle portion, a head portion and a longitudinalaxis; a plurality of tooth cleaning elements extending from the headportion; and a treatment device coupled to the body so as to bealterable between a storage state and a use state, the treatment devicecomprising: a housing; a power source disposed within the housing; andan electromagnetic radiation (EMR) source disposed within the housingand operably coupled to the power source; wherein the treatment devicefurther comprises a switch, the switch operably coupled to the EMRsource and the power source to turn the EMR source off and on.
 15. Thetoothbrush according to claim 14 wherein the switch is inaccessible to auser when the treatment device is in the storage state.
 16. Thetoothbrush according to claim 14 wherein the switch is automaticallymaintained or actuated to an open state when the treatment device is inthe storage state.